ArticleJB & JS open access
Effect of Using Mobile Bearing on the Incidence of Anterior Knee Pain in Primary Total Knee Arthroplasty Without Patellar Resurfacing: A Randomized Controlled Clinical Trial.
Article in JB & JS open access. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
5 authors.
Funding
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Abstract
Background: Anterior knee pain (AKP) remains a major complication following total knee arthroplasty (TKA). Mobile bearing (MB) is an alternative to fixed bearing (FB), supposing it has theoretical advantages in increasing the range of motion, reducing wear, and reducing anterior knee pain incidence when the patella is not resurfaced. Materials & Methods: This research is a double-blinded, randomized controlled clinical trial, conducted between July 2021 and March 2024. It included 76 patients who underwent unilateral primary total knee arthroplasty without patellar resurfacing. Patients were randomized into 2 groups; the first used a MB, and the second used a FB. Patients were followed for 18 months. The 2 groups were compared based on the incidence and severity of anterior knee pain, knee range of motion, Knee Society Score, and patient satisfaction assessment according to the Forgotten Joint Scale (FJS-12). Results: AKP occurred in 5 patients in the MB group and 6 in the FB group. We did not find a statistically significant difference between the 2 groups (P = 0.744). However, the severity of anterior knee pain according to the Visual Analog Scale (VAS) in the MB group was statistically significantly lower compared with the FB group (p < 0.05). We did not observe any statistically significant differences between the 2 groups in clinical and functional outcomes, or the complications rate. Conclusion: Using a MB does not reduce the incidence of anterior knee pain after primary total knee arthroplasty without patellar resurfacing. However, it could contribute to reducing the severity of this pain if it occurs for other reasons. Therefore, we recommend conducting further studies to determine the causes of anterior knee pain. Level of Evidence: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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